Improvement in oae-speings



F. CAJAR.

Car Spring. v No. 65,167. I Patented May 28, 1867.

@Initth gram igatmtt @ffitt.

FREDERICK G AJAR, OF NEW YORK, N. Y.

Letters Patent No. 65,167, dated M'ay 28, 1867.

IMPROVEMENT Ill GAR- SPRINGS.

Be it known that I, F. CAJAR, of the city of New York, county of New York, and State of New York, have inventeda new and improved Coiled and Spiral Car-Spring and Bufi'er; and I do hereby declare that the following is a full and exact description thereof, reference being had to the accompanying drawings, and its corresponding figures and letters, of which- Figures I, III represent elevations of my spring.

Figures II, IV represent sectional views of the same.

Figures I, II showing the spring in its natural position.

Figures III, IV the same when arrived at the point of the highest pressure of the burden.

Letters A to F designating the individual cones of the springs; a the outward, I) the inward ribs or projections of the respective lower margins of the spring and its'cones.

The nature, use, and operation of my invention will be developed at the first glance over the drawings, as it becomes plainly obvious thereby that by the means of said ribs a andb, owing to theincreased strength or stillness they impart to the sides of their respective cones, the i'latt'ening of the spring, or spreading out, viz, extending of the base of the cones beyond their natural diameter is greatly, even entirely avoided; thus the whole effect of the spring secured; that, further, my ribbed cones cannot so easily and also deeply become i'mboxed into each other, as this is the case with' coil springs of former construction, and that, consequently, the friction which is produced by-sueh an iinboxing, and which cannot but absorb a good deal of the force of the springs resistance or elasticity (needed for counteracting the pressure of the burden) will be reduced by iny improvement, and in accordance with the degrecof' curving the sides of-the cones from an extensive plane to a mere line of friction. It will be also obvious that the spring itself will gain by said ribs in strength, steadiness, and power of action, especially if compared with a coiled spring of Harrisons patent,'(patented August 24, 1858,) and one of equal size and thickness of metal. My spring, besides, represents in said ribs a and 6 two additional spirals as auxiliaries to the single spiral of coiled springs of said Harrisons and similar construction.

What I claim as my invention, and desire to. secure by Letters Patent, is

The improvement of coiled or spiral springs and buffers for cars, die, by providing the lower margins of the coil, viz, of their individual (zones, with the ribs or projections a and 11, for the purpose and substantially as described above.

FR. GAJAR.

Witnesses 2 GEO. Rmrrnrsrnm, R. KoEuBER. 

